US11602139B2 - Fishing rod - Google Patents

Fishing rod Download PDF

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Publication number
US11602139B2
US11602139B2 US16/334,669 US201716334669A US11602139B2 US 11602139 B2 US11602139 B2 US 11602139B2 US 201716334669 A US201716334669 A US 201716334669A US 11602139 B2 US11602139 B2 US 11602139B2
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US
United States
Prior art keywords
securing portion
prepreg sheet
rod section
wound
reinforcement fibers
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Application number
US16/334,669
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English (en)
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US20210127654A1 (en
Inventor
Takuji Kawamura
Hirokazu Yamamoto
Hideaki TESHIROGI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Globeride Inc
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Globeride Inc
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Publication date
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Assigned to GLOBERIDE, INC. reassignment GLOBERIDE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWAMURA, TAKUJI, TESHIROGI, HIDEAKI, YAMAMOTO, HIROKAZU
Publication of US20210127654A1 publication Critical patent/US20210127654A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K87/00—Fishing rods
    • A01K87/06—Devices for fixing reels on rods
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K87/00—Fishing rods
    • A01K87/02—Connecting devices for parts of the rods
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K87/00—Fishing rods
    • A01K87/04—Fishing-line guides on rods, e.g. tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/564—Winding and joining, e.g. winding spirally for making non-tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/70—Agricultural usage or equipment
    • B29L2031/7002—Agricultural usage or equipment for fishing

Definitions

  • the present invention relates to a fishing rod and particularly to a fishing rod characterized by a structure for securing a fitting to the fishing rod, more specifically, for securing a fitting such as a fishing line guide or a reel seat to a rod section.
  • a fishing rod used with a reel mounted thereon in which a component (hereinafter, referred to also as a fitting) such as a fishing line guide or a reel seat is secured on a surface of a rod section.
  • a component hereinafter, referred to also as a fitting
  • a securing thread is wound on the fitting in a state of being placed on the rod section and a synthetic resin is applied on a surface thereof.
  • Patent Literature 1 discloses that a prepreg sheet formed of plain-woven reinforcement fibers impregnated with a synthetic resin is wound on a securing portion of a fitting and then is heated so as to cure the synthetic resin, thus securing the fitting.
  • This prepreg sheet for securing disclosed in Patent Literature 1 is wound and secured in a state where the reinforcement fibers are aligned at 0°, 90° with respect to an axial direction of a fishing rod.
  • Patent Literature 2 discloses the use of a prepreg sheet including reinforcement fibers arranged regularly at 90° with respect to an axial direction of a fishing rod.
  • the above-described prepreg sheet used for the securing structure disclosed in Patent Literature 1 includes a layer in which the reinforcement fibers are oriented in the axial direction in an area extending from a securing portion of a fishing line guide to a rod section. Because of this, the prepreg sheet has increased rigidity with respect to a bending direction of the rod section, thus inhibiting bending. Furthermore, in a fishing rod including a plurality of rod sections jointed together, in order to joint/disjoint the rod sections, in some cases, the rod sections are twisted with respect to each other with a fishing line guide grasped, so that a load in a twisting direction might act on a securing portion of the fishing line guide.
  • the above-described prepreg sheet used for the securing structure disclosed in Patent Literature 2 includes reinforcement fibers oriented in a circumferential direction. Because of this, the prepreg sheet does not have a sufficient level of twist strength, thus failing to firmly prevent a securing portion from being lifted and hence to achieve a sufficient level of securing strength with respect to the rod section.
  • the present invention is intended to overcome the above-described problems, and one object thereof is to provide a fishing rod including a rod section and a fitting having a securing portion, the fitting being firmly secured at the securing portion to the rod section without inhibiting bending of the rod section, the securing portion having an excellent outer appearance.
  • the present invention is characterized in that in a fishing rod including a molded rod section having a surface and a fitting having a securing portion, the fitting being placed and secured on the surface of the rod section with a prepreg sheet wound on the securing portion of the fitting, the prepreg sheet being formed of plain-woven reinforcement fibers impregnated with a thermosetting resin, the prepreg sheet is disposed so that the reinforcement fibers are in oblique directions with respect to an axial direction, and the prepreg sheet is wound and secured so that intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on a part of the rod section located beyond a distal end of the securing portion are smaller than intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the securing portion.
  • the prepreg sheet formed of plain-woven reinforcement fibers is disposed so that, on the securing portion of the fitting, the reinforcement fibers are in oblique directions with respect to the axial direction.
  • This configuration suppresses rigidity in the axial direction, thus reducing inhibition of bending of the rod section, and also increases twist strength at the securing portion, thus improving securing strength of the fitting, so that the prepreg sheet is easily wound so as to correspond to a change in shape.
  • the prepreg sheet is wound and secured so that intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the part of the rod section located beyond the distal end of the securing portion are smaller than intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the securing portion, so that it is less likely that wrinkles are formed at a winding portion, thus achieving an improvement in outer appearance.
  • an orientation of the reinforcement fibers relatively approximates to the axial direction, and thus it is less likely that rising of the reinforcement fibers occurs, so that it is possible to effectively hold down the securing portion and thus to improve securing strength.
  • the prepreg sheet formed of plain-woven reinforcement fibers in a region surrounding the securing portion of the fitting, on the securing portion, the prepreg sheet is wound in a circumferential direction, and on the part of the rod section located beyond the securing portion, the prepreg sheet is wound in the circumferential direction while a tension is applied in the axial direction toward a proximal end side of the fishing rod.
  • intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the part of the rod section located beyond the distal end of the securing portion can be made smaller than intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the securing portion.
  • winding is performed so as to correspond to a change in diameter, which makes it possible for the prepreg sheet when thermally cured to have a well-looking outer appearance without wrinkles formed therein.
  • a fishing rod including a rod section and a fitting having a securing portion, the fitting being firmly secured at the securing portion to the rod section without inhibiting bending of the rod section, the securing portion having an excellent outer appearance.
  • FIG. 1 is a view showing one embodiment of a fishing rod according to the present invention.
  • FIG. 2 is a schematic sectional view showing a secured state of a leg portion of a fishing line guide of the fishing rod shown in FIG. 1 .
  • FIG. 3 is a schematic perspective view showing a configuration of a prepreg sheet used to secure a securing portion of the fishing line guide to a rod section.
  • FIG. 4 is an enlarged view of the prepreg sheet wound on and secured to a region surrounding the securing portion.
  • FIG. 5 is a sectional view along a line A-A in FIG. 3 .
  • FIG. 1 is a view showing one embodiment of the fishing rod according to the present invention.
  • a fishing rod 1 of this embodiment includes a butt-side rod section 3 , an intermediate rod section 5 , and a tip rod section 7 (each referred to also as a rod section), and these rod sections are ordinarily jointed to each other.
  • the butt-side rod section 3 is provided with a reel seat 9 , and a fishing line guide for guiding a fishing line is attached at each appropriate location on the butt-side rod section 3 , the intermediate rod section 5 , and the tip rod section 7 , the fishing line being released from a reel R mounted to the reel seat 9 .
  • a fishing line guide provided on the butt-side rod section 3 is denoted as 10 A
  • a fishing line guide provided on the intermediate rod section 5 is denoted as 10 B
  • a fishing line guide provided on the tip rod section 7 is denoted as 10 C.
  • a top guide 10 D is attached to a distal end of the tip rod section 7 .
  • the fishing line guides (top guides) 10 A to 10 D and the reel seat 9 each constitute a fitting secured on a surface (an outer peripheral surface) of the rod sections.
  • the butt-side rod section 3 , the intermediate rod section 5 , and the tip rod section 7 are formed of a tubular body made of a fiber-reinforced resin and each formed in a tubular shape having predetermined dimensions in accordance with a conventional method.
  • a fiber-reinforced resin prepreg (a prepreg sheet) is wound on a core bar and subjected to a heating step, after which the core bar is pulled out.
  • the fiber-reinforced resin prepreg used in this case is formed by impregnating reinforcement fibers (mainly, carbon fibers, glass fibers, or the like) with a thermosetting synthetic resin such as an epoxy resin.
  • These rod sections can be molded in various forms. For example, they can be formed in a solid structure or by jointing a tubular body to a solid core material (for example, a superelastic alloy wire rod or a superelastic resin material).
  • FIG. 2 to FIG. 5 are views for explaining a method for securing the fishing line guide 10 B.
  • FIG. 2 is a schematic sectional view showing a secured state of a leg portion of the fishing line guide of the fishing rod shown in FIG. 1
  • FIG. 3 is a schematic perspective view showing a configuration of a prepreg sheet used to secure a securing portion of the fishing line guide to a rod section
  • FIG. 4 is an enlarged view of the prepreg sheet wound on and secured to a region surrounding the securing portion
  • FIG. 5 is a sectional view along a line A-A in FIG. 3 .
  • a securing portion 10 a of the fishing line guide 10 B which is the fitting, is placed on a surface of the rod section (the intermediate rod section) 5 molded. Then, a sheet member (a prepreg sheet) 30 made of a thermosetting resin is wound thereon. Further, such a wound state is secured by use of a fastening tape (not shown), after which a wound body thus obtained is put in a heating furnace and heat-treated. In the heating furnace, when a predetermined temperature (a thermosetting temperature) is reached, the thermosetting resin is cured, and thus the fishing line guide 10 B is secured on the rod section.
  • a predetermined temperature a thermosetting temperature
  • the securing portion 10 a has a width smaller than a diameter of the rod section 5 and extends in an axial direction, and a lower surface 10 b of the securing portion 10 a is a flat surface or a curved surface having a curvature different from that of the rod section, the sheet member made of a thermosetting resin may be previously and initially wound on the rod section 5 .
  • the sheet member made of a thermosetting resin may be previously and initially wound on the rod section 5 .
  • the prepreg sheet 30 there is used a sheet-shaped member formed of reinforcement fibers such as carbon fibers or glass fibers in plain-woven form impregnated with a thermosetting resin such as an epoxy resin, a nylon resin, a polyethylene resin, a polypropylene resin, a phenol resin, an unsaturated polyester resin, a vinyl ester resin, an urea resin, a melamine resin, a silicon resin, or a polyurethane resin. That is, the plain-woven reinforcement fibers of the prepreg sheet 30 are aligned in directions intersecting at right angles.
  • a thermosetting resin such as an epoxy resin, a nylon resin, a polyethylene resin, a polypropylene resin, a phenol resin, an unsaturated polyester resin, a vinyl ester resin, an urea resin, a melamine resin, a silicon resin, or a polyurethane resin. That is, the plain-woven reinforcement fibers of the prepreg sheet 30 are aligned in directions intersecting at right angles.
  • the prepreg sheet 30 thus described is cut in skew directions with respect to the intersecting reinforcement fibers, and a cut piece of prepreg sheet thus obtained is wound so that the reinforcement fibers are arranged obliquely with respect to the axial direction of the rod section.
  • the prepreg sheet 30 is cut into a rectangular shape so as to be in (+45°, ⁇ 45°) directions with respect to a group F 1 of reinforcement fibers and a group F 2 of reinforcement fibers intersecting with each other, and a cut piece of prepreg sheet thus obtained is wound on the securing portion 10 a so that these groups of reinforcement fibers are inclined at ⁇ 45° with respect to an axial direction X of the rod section 5 .
  • the prepreg sheet 30 could be cut so that it can be wound in one or more plies, and preferably, as shown in FIG. 5 , the prepreg sheet 30 is wound in two or less plies on the rod section 5 in a state where the securing portion 10 a is placed thereon. In this case, winding the prepreg sheet 30 in two or more plies on the rod section leads to a weight increase and is not easy.
  • the number of plies of the prepreg sheet 30 wound be set to two or less, and that the prepreg sheet 30 be wound so that overlapping portions of the prepreg sheet 30 after being wound in one ply lie on the securing portion 10 a of the fishing line guide 10 B.
  • the prepreg sheet 30 is wound so that overlapping portions of the prepreg sheet 30 lie in a region surrounding the securing portion 10 a in this manner, and thus it is possible to establish a stably (firmly) secured state of the fishing line guide 10 B.
  • the above-described prepreg sheet 30 is wound on the securing portion 10 a so that intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on a part of the rod section located beyond a distal end 10 e of the securing portion 10 a are smaller than intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the securing portion 10 a .
  • FIG. 10 In FIG.
  • the group F 1 of reinforcement fibers and the group F 2 of reinforcement fibers are wound and secured at ⁇ 45° with respect to the axial direction X, and on the part of the rod section located beyond the distal end 10 e of the securing portion 10 a , a group F 1 ′ of reinforcement fibers and a group F 2 ′ of reinforcement fibers are wound and secured at about ⁇ 40° with respect to the axial direction X.
  • a transition area from the distal end 10 e of the securing portion 10 a to the surface Sa of the rod section is also where a large change in diameter occurs.
  • the prepreg sheet 30 is wound in this area as is normally wound, wrinkles are formed in a boundary area between the distal end 10 e of the securing portion 10 a and the surface Sa of the rod section.
  • the prepreg sheet is wound in a circumferential direction, and on the part of the rod section located beyond the securing portion, the prepreg sheet is wound in the circumferential direction while a tension is applied in the axial direction toward a proximal end side of the fishing rod, and then the prepreg sheet is secured in this state by use of a fastening tape.
  • the prepreg sheet 30 When the prepreg sheet 30 is wound in this manner, due to a change in diameter and a stretched state in a boundary region between the distal end 10 e of the securing portion 10 a and the surface Sa of the rod section, square-shaped meshes are stretched into diamond-shaped meshes, and thus the prepreg sheet 30 can be wound so that intersecting angles of the group F 1 ′ of reinforcement fibers and the group F 2 ′ of reinforcement fibers with respect to the axial direction in a winding region on the part of the rod section located beyond the distal end of the securing portion are smaller than intersecting angles of the group F 1 of reinforcement fibers and the group F 2 of reinforcement fibers with respect to the axial direction in a winding region on the securing portion.
  • the prepreg sheet 30 is wound so as to be stretched in the axial direction, and thus it is possible for the prepreg sheet 30 when thermally cured to have a well-looking outer appearance without wrinkles formed therein.
  • a tapered portion 10 f be previously formed in the securing portion 10 a so that the securing portion 10 a has a thickness gradually decreasing toward a distal end thereof.
  • an axial length L of the part of the rod section located beyond the distal end 10 e of the securing portion 10 a and having the prepreg sheet 30 wound thereon be previously set to be in a range of 2 mm to 5 mm.
  • the axial length L is set to be in the above-described range so that these issues can be effectively suppressed.
  • thermosetting resin reacts chemically, and when a given temperature (a curing temperature) is reached, the thermosetting resin loses flowability and thus is cured, so that the fishing line guide 10 B is secured on the rod section.
  • the prepreg sheet 30 is formed of plain-woven reinforcement fibers and disposed so that, on the securing portion 10 a , the reinforcement fibers are in oblique directions with respect to the axial direction X. With this configuration, the prepreg sheet 30 is easily wound so as to correspond to a change in shape, and thus winding is facilitated.
  • the prepreg sheet 30 is wound so that, on the securing portion, the reinforcement fibers are at ⁇ 45°, and thus it is possible to provide a secured state well-balanced in the circumferential direction and the axial direction.
  • an orientation of the reinforcement fibers relatively approximates to the axial direction, and thus it is less likely that rising of the reinforcement fibers occurs, so that it is possible to effectively hold down the securing portion 10 a and thus to improve securing strength
  • the prepreg sheet 30 is wound and secured so that intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the part of the rod section located beyond the distal end 10 e of the securing portion 10 a are smaller than intersecting angles of the reinforcement fibers with respect to the axial direction in a winding region on the securing portion 10 a , and thus it is less likely that wrinkles are formed at a winding portion, thus achieving an improvement in outer appearance.
  • a joint structure of the rod sections may be a telescopic type, an inversely jointed type, or a socket-and-spigot jointed type. Furthermore, there may be a plurality of (two or more) intermediate rod sections or no intermediate rod sections. Furthermore, the fishing rod 1 may be formed of a single rod as a whole.
  • the fitting is not limited to a fishing line guide, and the above-described securing method can be applied also to a case of securing the reel seat 9 shown in FIG. 1 .
  • the oblique directions of reinforcement fibers on the securing portion are not limited to ⁇ 45°, and one group of reinforcement fibers among the reinforcement fibers may be wound at an angle larger than an angle at which the other group of reinforcement fibers are wound.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fishing Rods (AREA)
US16/334,669 2016-09-29 2017-06-20 Fishing rod Active 2040-03-28 US11602139B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JPJP2016-191740 2016-09-29
JP2016-191740 2016-09-29
JP2016191740 2016-09-29
PCT/JP2017/022731 WO2018061345A1 (ja) 2016-09-29 2017-06-20 釣竿

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US20210127654A1 US20210127654A1 (en) 2021-05-06
US11602139B2 true US11602139B2 (en) 2023-03-14

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US (1) US11602139B2 (ko)
EP (1) EP3520610B1 (ko)
JP (1) JP6894912B2 (ko)
KR (1) KR102436772B1 (ko)
CN (1) CN109788746B (ko)
WO (1) WO2018061345A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6995704B2 (ja) * 2018-06-28 2022-01-17 グローブライド株式会社 取付部品が取り付けられた竿体を有する釣竿
JP6921040B2 (ja) * 2018-07-18 2021-08-18 グローブライド株式会社 取付部品が取り付けられた竿体を有する釣竿
CN114568400B (zh) 2018-06-28 2023-06-06 古洛布莱株式会社 具有安装了安装部件的竿体的钓竿
JP6995705B2 (ja) * 2018-06-29 2022-01-17 グローブライド株式会社 取付部品が取り付けられた竿体を有する釣竿
JP7258643B2 (ja) * 2019-05-07 2023-04-17 株式会社シマノ 釣竿
JP7193440B2 (ja) * 2019-11-20 2022-12-20 グローブライド株式会社 釣り用品用の湾曲体

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Publication number Publication date
KR102436772B1 (ko) 2022-08-26
KR20190052010A (ko) 2019-05-15
CN109788746B (zh) 2024-04-30
US20210127654A1 (en) 2021-05-06
JP6894912B2 (ja) 2021-06-30
EP3520610B1 (en) 2024-01-03
WO2018061345A1 (ja) 2018-04-05
EP3520610A1 (en) 2019-08-07
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CN109788746A (zh) 2019-05-21
EP3520610A4 (en) 2020-05-27

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